swing学习3--按钮触发事件及获取文本框值
package swing;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class Test {
public static void main(String[] args) {
new Text2().setVisible(true);
}
}
class Text2 extends JFrame{
private JButton button;
private JTextField text;
public Text2(){
super(“我是标题”);
this.setSize(250,200);
this.setLayout(null);
this.setLocation(500,500);
button = new JButton(“按钮”);
text = new JTextField(20);
JPanel panel = new JPanel();
panel.add(button);
panel.add(text);
//添加面板
setContentPane(panel);
button.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
new Text3(text).setVisible(true);
}
});
}
}
class Text3 extends JFrame{
public Text3(JTextField text){
super(“我是标题”);
this.setSize(200,200);
this.setLocation(600,300);
this.setLayout(null);
String info = “”+text.getText();
JLabel label = new JLabel(info);
JPanel panel = new JPanel();
panel.add(label);
setContentPane(panel);
}
}